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Finding the Fourth Proportional to 474,900.42, 655,363.66 and 257,111.40

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Solution

The fourth proportional to 474,900.42, 655,363.66 and 257,111.40 is: 354,814.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,900.42 : 655,363.66 = 257,111.40 : x
  2. Step 2: Convert to fraction form
    474,900.42/655,363.66 = 257,111.40/x
  3. Step 3: Cross multiply
    474,900.42x = 655,363.66 × 257,111.40
  4. Step 4: Simplify right side
    474,900.42x = 168,501,468,131.72
  5. Step 5: Solve for x
    x = 168,501,468,131.72/474,900.42
  6. Step 6: Final answer
    x = 354,814.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.